title: Folate antagonists from a crude "X-methyl folate" preparation.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002852:Chromatography, Ion Exchange / Q000379:methods; D013293:Enterococcus faecalis / Q000187:drug effects; D005492:Folic Acid / Q000031:analogs & derivatives* / Q000302:isolation & purification / Q000494:pharmacology; D005493:Folic Acid Antagonists / Q000302:isolation & purification* / Q000494:pharmacology; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005493:Folic Acid Antagonists; D005492:Folic Acid